1048617

Appears in sequences

• Expansion of (2-2*x-x^2)/((1-2*x^2)*(1-x)^2).at n=40A016724
• a(n) = 2^n + 2*n + 1.at n=20A176691
• Numbers n for which A019565(n) <= A087207(n) < n.at n=43A286612
• Expansion of g.f. A(x) = Sum_{n=-oo..+oo} x^n * (2 + x^n)^(2*n).at n=10A363558
• Expansion of Sum_{k>0} k * x^k / (1 - 2*x^(2*k)).at n=40A364035